/Engine/Source/Editor/UnrealEd/Public/EditorViewportLayoutFourPanes.h
class FEditorViewportLayoutFourPanes : public [FAssetEditorViewportPaneLayout](API\Editor\UnrealEd\FAssetEditorViewportPaneLayout)
TSharedPtr< cla...
PrimarySplitterWidget
The splitter widgets
TSharedPtr< cla...
SecondarySplitterWidget